Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689708 | Zone protective directional relay scheme | Helmut Hager, Jurgen Kopainsky | 1987-08-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689708 | Zone protective directional relay scheme | Helmut Hager, Jurgen Kopainsky | 1987-08-25 |